20122011012 has 36 divisors (see below), whose sum is σ = 49081492880. Its totient is φ = 6415711632.

The previous prime is 20122010941. The next prime is 20122011017. The reversal of 20122011012 is 21011022102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (20122011017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1578562 + ... + 1591257.

Almost surely, 2^20122011012 is an apocalyptic number.

It is an amenable number.

20122011012 is an abundant number, since it is smaller than the sum of its proper divisors (28959481868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20122011012 is a wasteful number, since it uses less digits than its factorization.

20122011012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3169872 (or 3169847 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20122011012 its reverse (21011022102), we get a palindrome (41133033114).

The spelling of 20122011012 in words is "twenty billion, one hundred twenty-two million, eleven thousand, twelve".